#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include <stdlib.h>

int main()
{
	char a[] = "";
	char b[] = "     ";
	char c[] = "66666";
	char d[] = "    @. 66ab";
	char e[] = "    6666@qq.com";
	char f[] = "520hehe";
	char g[] = "i love you 555";

	printf("%d\n", atoi(a));
	printf("%d\n", atoi(b));
	printf("%d\n", atoi(c));
	printf("%d\n", atoi(d));
	printf("%d\n", atoi(e));
	printf("%d\n", atoi(f));
	printf("%d\n", atoi(g));

	return 0;
}
